Question

namespace BackgroundWorkerExample
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            Thread.Sleep(1000);
            MessageBox.Show("Now!");
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Not working friends!
            backgroundWorker1.RunWorkerAsync(backgroundWorker1_DoWork);
        }
    }
}

如何调用DoWork方法（我是否必须这样做？lol ）

Answer 1

backgroundWorker1.RunWorkerAsync();

参数是可选的，用于将参数传递给DoWork：

backgroundWorker1.RunWorkerAsync(10);
backgroundWorker1.RunWorkerAsync(obj);  // Pass multiple arguments using an object

可以使用e.Argument强制转换为对象类型从DoWork访问。

Answer 2

没关系，我自己找到了答案。事实证明该方法没有任何参数用于我的用例。

namespace BackgroundWorkerExample
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            Thread.Sleep(1000);
            MessageBox.Show("Now!");
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Now it works!
            backgroundWorker1.RunWorkerAsync();
        }
    }
}

背景工人的帮助。非常基本的

2 个答案: